In order to reveal the roof cooperative control mechanism of gob-side entry retaining with roof cutting in inclined coal seam and reasonably select the hydraulic support for supporting roof, taking the 1306 working face of Great Wall No.5 Coal Mine as the engineering background, the roof structure characteristics and spatial evolution law of overlying strata of gob-side entry retaining with roof cutting are systematically analyzed. The roof control concept of “cooperative bearing of support body and support body” is put forward, and the cooperative roof control technology system of “pull-support-solid” is constructed. Based on the theory of masonry beam and the principle of moment balance, the mechanical model of roof cooperative control of gob-side entry retaining with roof cutting is constructed, the calculation formula of support force of support body in roadway is deduced, and the mechanical balance relationship between load body and support body is clarified. The research shows that the working resistance of the retaining roadway support is negatively correlated with the bearing capacity of the solid side coal pillar, and the support selection should take into account the synergistic demand of the roof load and the surrounding rock pressure. Combined with the actual conditions of 1306 working face, it is calculated that the required supporting force per meter along the roadway is 1150 kN. When the spacing is 3.6 m, the working resistance of the support should be greater than 3578 kN. Based on this, the ZQ4000 / 20 / 40 unit support is selected. The results of numerical simulation and field monitoring show that the support can effectively control the deformation of the roof and floor. The maximum subsidence of the roof is not more than 31 mm, and the floor heave is controlled within 50 mm. The load of the support is " rising-falling-fluctuating ", and it has good constant resistance characteristics. The engineering verification further shows that the deformation of the roof and floor and the two sides of the retaining section is in a controllable range, and the effect of retaining is good. The research results provide theoretical basis and engineering reference for the selection of hydraulic support for gob-side entry retaining in inclined coal seam.